🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.51 AU - 0.61 AU

Year: 275 Days

Day: 41.1 Hours

Environment

Temp: -126 °C

Axial Tilt: 31.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.52 AU - 0.6 AU

Year: 275 Days

Day: 24.2 Hours

Environment

Temp: -125 °C

Axial Tilt: 35.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.2

Radius: 8.3

Gravity: 5.48 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 0.55 AU - 0.81 AU

Year: 368 Days

Day: 11.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 29,371,740 km

• M1: 103,223 km (0.111 R)
• M2: 560,693 km (0.072 R)
• M3: 856,298 km (0.062 R)
• M4: 1,384,827 km (0.103 R)
• M5: 1,706,463 km (0.082 R)
• M6: 2,009,997 km (0.068 R)
• M7: 2,528,952 km (0.108 R)
• M8: 2,955,007 km (0.058 R)
• M9: 3,331,844 km (0.109 R)
• M10: 4,071,605 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 983.8

Radius: 12.8

Gravity: 6 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.54 AU - 1.7 AU

Year: 1353 Days

Day: 11.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 29,371,740 km

• M1: 159,172 km (0.111 R)
• M2: 703,260 km (0.093 R)
• M3: 1,311,076 km (0.029 R)
• M4: 1,747,004 km (0.118 R)
• M5: 2,268,951 km (0.107 R)
• M6: 2,768,757 km (0.063 R)
• M7: 3,218,149 km (0.056 R)
• M8: 3,922,755 km (0.077 R)
• M9: 4,668,501 km (0.044 R)
• M10: 5,309,827 km (0.074 R)
• M11: 8,274,707 km (0.074 R)
• M12: 9,374,401 km (0.08 R)
• M13: 9,827,533 km (0.069 R)
• M14: 11,275,640 km (0.11 R)
• M15: 11,937,910 km (0.089 R)
• M16: 13,300,298 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.6

Radius: 14.4

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.8 AU - 2.16 AU

Year: 1828 Days

Day: 5.5 Hours

Environment

Temp: -189 °C

Axial Tilt: 45.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 29,371,740 km

• M1: 179,368 km (0.087 R)
• M2: 699,071 km (0.052 R)
• M3: 1,275,771 km (0.116 R)
• M4: 2,005,359 km (0.085 R)
• M5: 4,472,976 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110

Radius: 10

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 3.74 AU - 4.04 AU

Year: 5033 Days

Day: 10.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 29,371,740 km

• M1: 124,316 km (0.025 R)
• M2: 650,452 km (0.066 R)
• M3: 2,096,764 km (0.071 R)
• M4: 5,857,205 km (0.094 R)
• M5: 6,436,748 km (0.072 R)
• M6: 11,503,328 km (0.112 R)
• M7: 14,195,940 km (0.102 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 91.7

Radius: 4.2

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 7.1 AU - 8.1 AU

Year: 13745 Days

Day: 17.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,371,740 km

• M1: 53,855 km (0.095 R)
• M2: 231,727 km (0.052 R)
• M3: 401,521 km (0.108 R)
• M4: 559,945 km (0.105 R)
• M5: 829,071 km (0.074 R)
• M6: 2,199,388 km (0.08 R)
• M7: 2,491,852 km (0.095 R)
• M8: 2,902,647 km (0.101 R)
• M9: 3,949,234 km (0.119 R)
• M10: 4,711,884 km (0.113 R)
• M11: 6,853,228 km (0.065 R)
• M12: 8,134,235 km (0.072 R)
• M13: 16,736,411 km (0.077 R)
• M14: 17,416,932 km (0.088 R)
• M15: 22,038,010 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 48.6

Radius: 3.2

Gravity: 4.75 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 8.43 AU - 9.77 AU

Year: 18008 Days

Day: 21.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 96.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 29,371,740 km

• M1: 61,934 km (0.099 R)
• M2: 191,635 km (0.099 R)
• M3: 378,333 km (0.039 R)
• M4: 855,700 km (0.057 R)
• M5: 1,142,479 km (0.071 R)
• M6: 1,297,462 km (0.069 R)
• M7: 1,847,534 km (0.12 R)
• M8: 3,007,964 km (0.072 R)
• M9: 3,794,999 km (0.107 R)
• M10: 4,531,469 km (0.028 R)
• M11: 6,796,231 km (0.114 R)
• M12: 7,444,289 km (0.107 R)
• M13: 8,095,040 km (0.063 R)
• M14: 9,717,578 km (0.115 R)
• M15: 11,356,872 km (0.064 R)
• M16: 12,613,195 km (0.1 R)
• M17: 14,066,688 km (0.083 R)
• M18: 21,565,580 km (0.114 R)
• M19: 25,507,335 km (0.116 R)
• M20: 26,976,236 km (0.098 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 522 - 13,863 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit